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Note 2 - Significant Accounting Policies - Long-Lived Assets (Details) - USD ($) $ in Thousands	Jan. 31, 2025	Jan. 31, 2024
Property, plant and equipment	$ 81,038	$ 87,493
Less accumulated depreciation	45,673	49,873
Property, Plant and Equipment, Net	35,365	37,620
Land, Buildings and Improvements [Member]
Property, plant and equipment	$ 26,276	25,620
Land, Buildings and Improvements [Member] | Minimum [Member]
Useful life (Year)	3 years
Land, Buildings and Improvements [Member] | Maximum [Member]
Useful life (Year)	30 years
Machinery and Equipment [Member]
Property, plant and equipment	$ 50,360	56,411
Machinery and Equipment [Member] | Minimum [Member]
Useful life (Year)	3 years
Machinery and Equipment [Member] | Maximum [Member]
Useful life (Year)	10 years
Furniture and Fixtures [Member]
Property, plant and equipment	$ 3,218	3,169
Furniture and Fixtures [Member] | Minimum [Member]
Useful life (Year)	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Useful life (Year)	7 years
Air Transportation Equipment [Member]
Useful life (Year)	3 years
Property, plant and equipment	$ 1,184	$ 2,293

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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